Positioning mechanism



March 11, 1952 w. s. KLINGENBERG 2,588,932

POSITIONING MECHANISM Filed Dec. 16, 1949 2 SHEETS-SHEET 1 T mhmlnnhu 450 46 ix 32 :m

" INVENTOR umtn' wz 47 ATTORN EY w. s. KLINGENBERG 2,588,932

POSITIONING MECHANISM 2 SHEETSSHEET 2 7 6 r r EEMN m m u March 11, 1952Filed Dec. 16, 1949 INVENTOR M6.k/r' l enu e) BY ATTORNEY Patented Mar.11, 1952 UNITED STATES PATENT OFFICE asssmsz POSITIONING MECHANISM'Wirifielld s."K-lingenlniir'g; staniroim -cbim. Applicationbecembcr16,- 1949, Serial No. 133 134 This invention relates to mechanism forsetting into particular positions apart of ama'chinefas for example, amachine tool.

It is the object of my invention tocontribute a setting mechanism thatis extremely simple and effective, and yet will allow the positioning ofone part of a machine in very accurate relation to the .the relationtherebetween. As a further feature of this part of the invention, theadjustingm'ember is adapted to be located in a fixed" positionrelatively to a dial or other part of the machine, whereupon theactuation of the adjusting means between the adjustingme'mber and theoperating element with be effective to rotate the positioning shaft. Itis the feature of this part of the invention that this adjustment may beor a very fine character, as for example, seconds of a degree where theadjustment is angular.

I have thus outlined rather broadly the more important features of myinvention in order that the detailed description thereof that followsmaybe better understood, and in order that my contribution to the art maybe better appreciated. There are, of course, additional featuresof myinvention that will be described hereinafterand which will form thesubject of' the claims appended hereto. Those skilled in the art willappreciate that the conception on which mydisc1o sure is based mayreadily be utiliz'edas a basis for the designing of other structures forcarrying out the several purposes of my invention. "Itis important,therefore, that the claims to be granted me shall be of sufficientbreadth'to prevent the appropriation of my invention by those skilled inthe art.

Referring now to the drawings, Fig. I is' a'plan view looking downwardlyon the assemblyof my invention. Fig. 2 is an enlarged view of'pa'rt ofFig. 1. Figure 3 is a vertical section takenalong lines 3-3 of Fig. l.Figure 4 isa section taken a1ongjlines4-4 of Fig-3,

. iReferringnow more particularly to-the-draw- 'ifigs," referencenumeral I "indicates th'pos'itiom ing shaft ofmy invention mounted forrotation relatively to'a base bearing II and a dial i2 secured to thebase bearing by studs I3. The'dial I2 maybe graduated indegrees D and.minutes M; as bestshown in'Fig. 1. Thus, because I use a' 40 to 1'reduction gearingfbetween the positionlng shaft IOand "the" mechanismpositioned thereby, the dial I2 shown graduated to 9, it beingunderstood that 40 complete rotations'of the shaft I I)relatively'to'the dial'will rotate themechanism positioned by the shaftIIl'a distance of 360.

"member of myin'vention. It is quite obvious that the arm l'lwill'rotatewith arm IE on the axis of shaft I 0 if means areprovided' for securingthe arm I! to the arm I6. Suchmeans will be described presently, but atthis point it will be-well to"note that the two'a'rms I1 and It will bemain- 'tained in position relatively to the shaft I0 and sleeve It Wewasher I8'held in place by a nut I 9.

"insertion ofthe end 20 of a block 2I.

fastened in place relatively to the arm I6 by As is probably best seenin Fig. 4, the free end of the arm I6 is formed with an opening for theBlock 2I a stud 22 threaded into the-block 2I and holding in position awasher 23 that presses against the in arm' I6.

'50 'is adapted to house a lug portion 3| of a block 32.

lower surface of the arm I6. I Block 2I is threaded at 24 for thethreaded end 25 of an adjusting screw 26. Preferably, the block 2| isdrilled at 2?" for a stud 28 that is inscrew-threaded relation theretoat 29. The block 2I is slotted at 30 with the slot extending tothethreaded bore 24 in which the end 25 of the screw 26-is housed. By

' rotating the stud 28, as is clearly apparent from Fig. 3; the pressurerelationship between the block 2 I and the screw 26 maybe adjusted toincrease ordecreasetheresistance to the rotation of the screw 26. i

The left-endof the-arm II, as seen in Fig. 3, is formedwith an openingsimilar to that found This opening, as best shown in Fig. 4,

*A stud- 33 holds the block 32 and its portion 3| -in"assembled relationto arm I! through the intermediary of a washer 34 as is quite apparent.it-washer 35 is fitted onto the" shaft 26' and fits in -a deer-animatorthe" block 32 so as to prevent vfinger piece 31 will effect rotation ofthe shaft 26, and since the shaft 26 cannot move relatively to block 32,will affect movement of adjustment of block 2| relatively to block 32.It will further be appreciated that at all times the two arms 7 I6 andI1 will be rotatable together through the connection between the twoarms effected by the screw 26 and the blocks 2| and 32.

For locking the two arms I6- and I1 to one another and for integralmovement, arm I6 is formed with a threaded bore 40 within which .fitsthe threaded bolt portion 4| of a finger piece 42. The upper end of thethreaded bolted portion 4| lies within a slot 43 in the arm I1 as bestillustrated in Fig. 1. Therefore, the bolt 4| acts to limit the relativemovement between the arm I6, I1. Rotation of the finger piece 42 acts todraw the two arms toward one another so as to lock them against relativemovement when adjustment therebetween has been effected.

Finger piece 31, as best illustrated in Fig. 1, is formed with acalibrated annular dial 45,'the numerals on the dial representingseconds of a degree. Engraved 'on the upper surface 46 of the block 32are numerals N, the space between consecutive numerals designating'oneminute. Numerals representing ten minutes are engraved on the surface46, as best seen in Fig. 2, because ten minutes represents the maximummovement of adjustment between arms I6 and I1. An indicator pointer 41is fixed by screws 48 to the upper surface of the block 2| and co-actswith the numerals N, on the surface 46, as is quite clearly apparent inFigs. 1 and 2.

Those skilled in the art will now appreciate that by rotation of thefinger piece 31 through a partial revolution, the two arms I6, I1 willbe rotated relatively to one another a distance representing seconds ofrotation of the shaft I6. This movement Will be measured by the figuresin the annular dial 45. hold in fixed position the arm I1, the rotationof the finger piece 31 through one revolution would effect the rotationof the shaft I6 sixty seconds or one minute. This one minute will, ofcourse, be indicated through movement of the pointer 41 relatively tothe numerals N engraved on the surface 46 of block 32. Further, themaximum adjustment of the two arms I6, I1 relatively to one anotherrepresents II) minutes movement of the shaft I0 relatively to the basebearing II and the dial I2.

For locking the arm I1 relatively to the base II and dial I2 whereby tomake possible fine adjustments of the shaft II] by finger piece 31, thedial I2 is formed with a series of bores 56 positioned ten minutesapart. The several bores 56 are adapted to co-act with the lower end 5|of a detent pin 52 carriedby a sleeve 53 that is fixed to the arm I1.The upper end of the detent pin 52 carries a finger piece 54 fixedthereto at 55. Finger piece 54- is adapted to lift the detent pin 52against the pressure of'a spring 56, after which a holding pin 51, byentry into a groove '58, may hold the pin 51 upwardly and away from thedial I2. An indicating spring 59 is a In other words, were we toutilized to indicate just what is the position of the arm I1 relativelyto the dial I2.

It will now be well to outline just how the mechanism of my inventionacts in a machine tool. Thus, if it is desired to rotate the shaft III adistance of several degrees, some minutes, and some seconds, the fingerpiece '54 is first moved upwardly to move detent pin portion 5| from outof one of the bores of the dial I2. It is then possible to rotate thearm. I1, and through the arm I1 the arm I6 and shaft II). During suchrotation the adjusting mechanism will be in the position of Figure 1with the arms I6, I1 locked together by the finger piece 42 and itsthreaded bolt portion 4|.

Rotation of the shaft I0 takes place until the pointer spring 59indicates the number of degrees and ten minute intervals thereof nearestthe predetermined setting of the shaft I!) required. At this point theholding pin 51 will be raised out of the depression 58 and the detentpin 52 allowed to drop under the influence of spring 56 until its lowerend 5| enters a bore 5|]. Thereafter the finger piece 42 is rotatedcounterclockwise to release the arms I6, I1 for movement relatively toone another within the limits of the slot 43. It is then possible torotate finger piece 31 to adjust the position of the arm I6 relativelyto the arm I1, arm I1 being held firmly against movement relatively tothe dial I2. This movement of adjustment is measured by pointer 41relatively to the numerals N engraved on surface 46, and also by theannular dial 45. Further, any movement of adjustment that takes placebetween the arms I6, I1 effects movement of the shaft I0 through thenumber of minutes and seconds of movement of adjustment measured by dial45 and pointer 41.

I believe it is now quite clearly apparent that through use of themechanism I have devised it is possible to obtain effective, accuratemovemen of adjustment of the shaft I6.

I now claim:

1. In a combination of the class described, a positioning shaft, abearing member for said shaft including a dial relatively to which saidpositionlying operating element and having a screw threaded bore withinwhich is threadedly mounted said screw threaded shaft, and means forfixing said adjusting member relatively to said dial and bearing member.

2. In a combination of the class described, a positioning shaft, a dialrelatively to which said positioning shaft is rotated, an adjustingmember rotatable in the axis of said shaft and relatively to said shaft,an operating element secured to said shaft for rotating said shaft, astud secured block extending upwardly from said adjusting member, a studsecured block extending upwardly from said operating element, screwthreaded means extending between said blocks for adjusting saidoperating element relatively to said adjusting member, and means forsecuring said adjdusting member against rotation relatively to said ial.

3-. In a combination of the class described, a positioning shaft, a dialrelatively to which said positioning shaft is rotated, an adjusting armmounted for free rotation about the axis of said shaft, an operating armsecured to said shaft for rotating said shaft, a stud secured blockextending upwardly from said adjusting arm, a stud secured blockextending upwardly from said operating arm, calibrated screw threadedmeans extending between said blocks for securing said adjusting arm tosaid operating arm whereby rotation of said adjusting arm rotates saidshaft through the intermediary of said operating arm, detent means forfastening said adjusting arm to said dial, and said calibrated screwthreaded means determining the positioning of said operating armrelatively to said adjusting arm and thereby the degree of rotation ofsaid shaft relatively to said dial by said calibrated screw threadedmeans.

WINFIELD S. KLINGENBERG.

REFERENCES CITED The following references are of record in the NumberName Date 273,451 Brainard Mar. 6, 1883 1,391,016 Slider et a1 Sept. 20,1921 1,592,700 McDougal July 13, 1926 1,879,941 McCabe Sept. 27, 19322,012,859 Vocke Aug. 27, 1935 2,136,958 Tyson Nov, 15, 1938 2,228,583Parsons Jan. 14, 1941 2,357,329 Hansen Sept. 5, 1944 2,439,102Rothweiler Apr, 6, 1948 2,452,544 Brodie Nov. 2, 1948 2,463,649Sheflield Mar. 8, 1949 2,467,899 Lowkrantz Apr. 19, 1949

